Abstract:
:Amphibia Kupffer cells (i.e., liver resident macrophages) show many common characteristics when compared with Mammalia Kupffer cells: filopodia, microvillous-like structures, lamellipodia, fuzzy coat, coated vesicles, bristled vacuoles, nonspecific esterase activity, and pinocytotic and phagocytic activity are present both in Amphibia and Mammalia Kupffer cells. On the other hand, some differences are present between Kupffer cells of both zoological classes: phagocytosed red cells and their derivatives, iron-protein complexes, and lipofuscin bodies are normally present in Amphibia Kupffer cells, but absent in the same cells of healthy mammals. Worm-like structures are not seen in Amphibia and endogenous peroxidase activity is very weak in these animals compared with Mammalia. The most important difference lies in the ability of Amphibia Kupffer cells to produce melanins: in fact the tyrosinase gene is expressed, "melanosome centers" are present, and dopa oxidase activity is demonstrable.
journal_name
Microsc Res Techjournal_title
Microscopy research and techniqueauthors
Sichel G,Scalia M,Corsaro Cdoi
10.1002/jemt.10101keywords:
subject
Has Abstractpub_date
2002-06-15 00:00:00pages
477-90issue
6eissn
1059-910Xissn
1097-0029journal_volume
57pub_type
杂志文章,评审abstract::This paper summarizes the essential features of the various facilities dedicated to in situ irradiation effects research around the world at the present time, mentions some essential techniques that are involved in this type of research, and describes very briefly some examples of studies employing these facilities an...
journal_title:Microscopy research and technique
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journal_title:Microscopy research and technique
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journal_title:Microscopy research and technique
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journal_title:Microscopy research and technique
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journal_title:Microscopy research and technique
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